Safety-envelop.



G. A. RUSSELL.

SAFETY ENVELOP- APPLICATION FILED APR. 10. 1915.

1,150,88. Patented Aug. 24, 1915.

l l i um/M01 COLUMBIA PLANOGRAPH COqWABHINGTON. D. C-

GEORGE A. RUSSELL, OF MAYSVILLE, MISSOURI.

SAFETY-ENVELOP.

Specification of Letters Patent.

Patented A11 24, 1915.

Application filed April 10, 1915. Serial No. 20,507.

To all whom it may concern Be it known that I, GEORGE A. RUSSELL, acitizen of the United States, residing at Maysville, in the county ofDekalb and State of Missouri, have invented new and useful Improvementsin Safety-Envelops, of which the following is a specification.

The present invention contemplates the provision of an envelop whereinthe mail matter may be transported in safety.

Specifically stated the invention aims to provide an envelop wherein thebottom flap is provided with side extensions adapted to be foldedthereupon, and between which parts the closure flap is adapted to beinserted and adhesively secured to said extensions, subsequent to thefolding of the bottom flap upon the body of the envelop, whereupon thebottom flap is adhesively secured to said closure flap, and the sideflaps subsequently secured upon the former, thus producing an envelopwhich cannot be opened without destroying the same, and therebyaffording considerable amoimt of protection during transportation ofmail matter.

In the drawing forming part of this application like numerals ofreference indicate similar parts in the several views and wherein:

Figure 1 is a plan view of the envelop unfolded. Fig. 2 is a view of theenvelop partly folded. Fig. 3 is a similar view with the closure flap infolded position. Fig. 4 is a sectional view of the envelop complete.

The envelop forming the subject matter of my invention comprises a mainbody portion 5, side flaps 6, a bottom flap 7 from the opposite sideedges of which project the extensions 8 of the same relative width asthe flap 7, and a closure flap 9. All the side flaps are provided alongtheir marginal edges with an adhesive substance, to permit sealing ofthe parts when folded.

When it is desired to use the envelop, the extensions 8 are first foldedupon the bottom flap 7, and the latter subsequently folded upon the bodyportion 5. The mail matter is then arranged between the said extensionsand the body portion 5, and the closure flap 9 then inserted between theextensions 8 and the bottom flap 7 and adhesively secured along its freeedge to the extensions 8, the closure flap being of substantially thesame area as the body portion 5, it will be obvious that the free edgeis arranged along the lower edge of the latter. The upper edge of thebottom flap 7 is then adhesively secured to the outer face of theclosure flap 9 adjacent its opposite longitudinal edge.

The side flaps 6 while substantially of triangular formation, have astraight lower edge adapted to be adhesively secured along one marginaledge of the bottom flap 7, to the outer surface and immediately abovethe free edge of the closure flap 9, thus serving as an additionalcovering for the latter, which materially increases the strength of theenvelop. But by reason of the specific arrangement of the various parts,the latter in their entirety produce an envelop which cannot be steamedor otherwise opened without mutilating the parts, thus affording ampleevidence that the same has been tampered with, should an attempt be madeby an unauthorized person to open the envelop.

It is believed that from the foregoing description the nature andadvantages of the invention. will be readily apparent without requiringa more extended explanation and therefore the same has been omitted.

What is claimed is An envelop comprising a body portion, side flaps, abottom flap, extensions projecting from the opposite side edges of thebottom flap and adapted to be folded thereupon, a closure flap adaptedto be inserted between said extensions and bottom flap, said closureflap having an area equal to the combined area of said extensions andhaving its free edge adhesively secured thereto adjacent the lower edgesof said extensions, the upper edge of said bottom flap being adhesivelysecured to the outer face of the closure flap along the oppositelongitudinal edge thereof, and said side flaps being adapted to befolded upon the bottom flap and adhesively secured thereto immediatelyabove the free edge of the closure flap for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE A. RUSSELL.

Witnesses:

GEORGE RoBINsoN, R. A. HEWITT.

copies of this patent may he obtained for five cents each, byaddressing" the Commissioner 0:! Patents, Washington, D. G.

